Moench, Erwin and Bandurin, Denis A. and Dmitriev, Ivan A. and Phinney, Isabelle Y. and Yahniuk, Ivan and Taniguchi, Takashi and Watanabe, Kenji and Jarillo-Herrero, Pablo and Ganichev, Sergey D. (2020) Observation of Terahertz-Induced Magnetooscillations in Graphene. NANO LETTERS, 20 (8). pp. 5943-5950. ISSN 1530-6984, 1530-6992
Full text not available from this repository. (Request a copy)Abstract
When high-frequency radiation is incident upon graphene subjected to a perpendicular magnetic field, graphene absorbs incident photons by allowing transitions between nearest Landau levels that follow strict selection rules dictated by angular momentum conservation. Here, we show a qualitative deviation from this behavior in high-quality graphene devices exposed to terahertz (THz) radiation. We demonstrate the emergence of a pronounced THz-driven photoresponse, which exhibits low-field magnetooscillations governed by the ratio of the frequency of the incoming radiation and the quasiclassical cyclotron frequency. We analyze the modifications of generated photovoltage with the radiation frequency and carrier density and demonstrate that the observed photoresponse shares a common origin with microwave-induced resistance oscillations discovered in GaAs-based heterostructures; however, in graphene it appears at much higher frequencies and persists above liquid nitrogen temperatures. Our observations expand the family of radiation-driven phenomena in graphene, paving the way for future studies of nonequilibrium electron transport.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-DIMENSIONAL ELECTRON-GAS; ZERO-RESISTANCE STATES; CYCLOTRON-RESONANCE; OSCILLATIONS; PHOTOCONDUCTIVITY; PLASMONS; graphene; terahertz radiation; microwave-induced resistance oscillations; photodetection; nonequilibrium transport; cyclotron resonance |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Mar 2021 08:31 |
| Last Modified: | 16 Mar 2021 08:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44026 |
Actions (login required)
 |
View Item |
